Enhanced Non-linear Instabilities in Photonic Circuits with Exceptional Point Degeneracies (Preprint)
Abstract
A conceptual design of optical power limiter based on a photonic circuit with a second-order exceptional point degeneracy (EPD) is proposed. The design is based on a pair of coupled cavities with judiciously tailored differential Q-factors. One of the cavities includes a Kerr-like non-linear material. At low input intensities (in the linear regime) the two cavities are optically identical, and the transmittance of the entire photonic circuit is close to unity. As the input intensity is increased, the nonlinearity introduces a resonant detuning which lifts the degeneracy and results in formation of two distinct resonant modes. One of them (the high-Q mode) is abruptly destroyed due to nonlinear instabilities, while the low-Q mode experiences an under damping to-overdamping transition, rendering the entire photonic circuit highly reflective. The design allows to significantly lower the limiting threshold, while enhancing the power-handling capabilities due to the absence of absorption. A similar approach can be applied to optical power switching, Q-switching, routing, etc.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 2016
- Accession Number
- AD1096212
Entities
People
- A. A. Chabanov
- Ilya Vitebskiy
- Nicholaos I. Limberopoulos
- Rodion Kononchuk
- Suwun Suwunnarat
- Tsampikos Kottos
Organizations
- University of Cincinnati